US5749875A
Expired / Lapsed
US
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Bone plate system for proximal tibial osteotomy
Assignee: Arthrex Inc
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Filing: 1997-01-14
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Granted: 1998-05-12
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Expires: 2017-01-14
Abstract
Abstract A system for performing proximal tibial or femoral osteotomies. The system includes a plurality of bone plates of various sizes, and a calibrated wedge tool for opening a resected tibial wedge and determining the size plate to use in the osteotomy.
Inventors
- 👤 Giancarlo Puddu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:40
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61B17/8095; A61B17/88; Y; Y10; Y10S; Y10S606/00; Y10S606/915
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
194 words
A system for performing opening wedge osteotomies in which a bone is resected so as to have an opening on one side governed by a bony hinge on the other side, the system comprising: a plurality of bone plates, each bone plate having two ends, a width, a proximal side, and a distal side, the distal side having at least one projection with a length and a depth for insertion into the opening to prevent closure of the opening, the projection having opposed edges for engaging and propping open the bone, the plate extending toward the ends on either side of the projection for engaging an outer surface of the bone; and a tool having a distal end and a proximal end, the distal end of the tool including a wedge having two prongs, the two prongs being separated from each other by a distance greater than the width of the bone plates, the prongs of the wedge having a substantially linearly tapered thickness beginning at the distal end for wedging and holding open the resected bone and receiving between the prongs a selected bone plate for propping open the wedged open resected bone.
Claim 2
Independent Claim
194 words
A system for performing opening wedge osteotomies in which a bone is resected so as to have an opening on one side governed by a bony hinge on the other side, the system comprising: a plurality of bone plates, each bone plate having two ends, a width, a proximal side, and a distal side, the distal side having at least one projection with a length and a depth for insertion into the opening to prevent closure of the opening, the projection having opposed edges for engaging and propping open the bone, the plate extending toward the ends on either side of the projection for engaging an outer surface of the bone; and a tool having a distal end and a proximal end, the distal end of the tool including a wedge having two prongs, the two prongs being separated from each other by a distance greater than the width of the bone plates, the prongs of the wedge having a substantially linearly tapered thickness beginning at the distal end for wedging and holding open the resected bone and receiving between the prongs a selected bone plate for propping open the wedged open resected bone.
Claim 3
Dependent Claim
21 words
The system of claim 1, wherein the thickness of the wedge is calibrated in relation to the length of the projections.
Claim 4
Dependent Claim
34 words
The system of claim 1, wherein five bone plates are provided, and the length of the projection on each bone plate is 5 mm, 7.5 mm, 10 mm, 12.5 mm and 15 mm, respectively.
Claim 5
Dependent Claim
22 words
The system of claim 1, wherein each of the ends of the bone plates has a hole for receiving a bone screw.
Claim 6
Dependent Claim
14 words
The system of claim 1, wherein the depth of the projection is four millimeters.
Claim 7
Dependent Claim
11 words
The system of claim 1, wherein the wedge thickness tapers linearly.
Claim 8
Dependent Claim
10 words
The system of claim 1, wherein the plate is curved.
Claim 9
Dependent Claim
11 words
The system of claim 7, wherein the curve is formed distally.
Claim 10
Dependent Claim
15 words
The system of claim 1, wherein the proximal end of the tool includes a handle.
Claim 11
Dependent Claim
18 words
The system of claim 1, wherein the proximal end and the distal end have a common longitudinal axis.
Claim 12
Independent Claim
186 words
A system for correcting a deformity by performing an open-wedge osteotomy, the bone being resected to have an opening on one side and a bony hinge on the other, the system comprising: a tool for wedging apart the bone on the open side of the resected bone, the tool having a distal end and a proximal end, the distal end including at least two prongs separated by a distance, each prong being in the form of a wedge having a substantially-linearly tapered thickness beginning from the distal end; and a plurality of bone plates for propping open the wedged apart bone on the open side of the resected site, each bone plate having projections projecting distally into the opening for preventing closure of the open side of the resected site, and a width less than the distance between the prongs of the wedge, such that the bone plate fits between the two prongs of the tool for insertion of the projections into a resected site wedged open by the tool, and extensions on either side of the projections for engaging an outer surface of the bone.
Claim 13
Independent Claim
186 words
A system for correcting a deformity by performing an open-wedge osteotomy, the bone being resected to have an opening on one side and a bony hinge on the other, the system comprising: a tool for wedging apart the bone on the open side of the resected bone, the tool having a distal end and a proximal end, the distal end including at least two prongs separated by a distance, each prong being in the form of a wedge having a substantially-linearly tapered thickness beginning from the distal end; and a plurality of bone plates for propping open the wedged apart bone on the open side of the resected site, each bone plate having projections projecting distally into the opening for preventing closure of the open side of the resected site, and a width less than the distance between the prongs of the wedge, such that the bone plate fits between the two prongs of the tool for insertion of the projections into a resected site wedged open by the tool, and extensions on either side of the projections for engaging an outer surface of the bone.
Claim 14
Independent Claim
160 words
A system for correcting a deformity by performing an osteotomy in a bone at an osteotomy site, the system comprising: means for wedging bone open at a resected site, the resected site having an open side and a hinged side, the means for wedging bone having a distal end and a proximal end, and including two prongs being separated by a distance, the prongs being in the form of a wedge having a substantially-linearly tapered thickness beginning at the distal end; and means for preventing closure of the open side of the resected site wedged open by the means for wedging, each means for preventing closure having projections for insertion into the open side of the resected site, the width of each bone plate being less than the distance separating the prongs, such that the bone plate fits between the two prongs of the tool for insertion of the projections into a resected site wedged open by the wedge means.
Claim 15
Independent Claim
160 words
A system for correcting a deformity by performing an osteotomy in a bone at an osteotomy site, the system comprising: means for wedging bone open at a resected site, the resected site having an open side and a hinged side, the means for wedging bone having a distal end and a proximal end, and including two prongs being separated by a distance, the prongs being in the form of a wedge having a substantially-linearly tapered thickness beginning at the distal end; and means for preventing closure of the open side of the resected site wedged open by the means for wedging, each means for preventing closure having projections for insertion into the open side of the resected site, the width of each bone plate being less than the distance separating the prongs, such that the bone plate fits between the two prongs of the tool for insertion of the projections into a resected site wedged open by the wedge means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-11 | 2001-11-10 | 2002-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-11 | 2005-11-10 | 2006-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-11 | 2009-11-10 | 2010-05-12 | $7700.00 | Window Closed / Lapsed |